Depends..
For me i m not into all this cultural dance.

But Kecak and barong, alot of ppl recommend me go for kecak.

barong dance a bit more boring compared to kecak dance
at least kecak dance has the fire climax at the end

but I highly recommend you watch the kecak dance at Uluwatu and not other place
go a bit early to grab a good seat facing the sea and cliff
it's an surreal experience watching the kecak dance with the sunset backdrop
IMO, best view in Bali

as for Uluwatu, it used to be plagued by monkeys, but we went there again in Sept last year, didn't see a single monkeys at all, I heard the authorities actually get rid of them due to constant complaints from the tourist.

400k /day driver ?
u can use mine. he charge 350k/day (used to be 300k, but now all increase so he have to increase)
if you want.